Tip - The Six Best Exercises for Six-Pack Abs

Spoiler Alert: Crunches and situps are not the secret to six-pack abs. In fact, repetitive or excessive spinal flexion (e.g., bending your chest toward your knees at the back) is just about "the worst thing you can do for your back," says David Larson, C.S.C.S., a strength coach at Pulse Fitness in Scottsdale, AZ. In addition to swapping crunches for some more complex moves (detailed below), proper diet is essential for carving out that six-pack—just ask any fitness model or strength coach.